Knoxville Republican Bill Dunn has for several years been pushing the state to embrace a program for granting vouchers to students in failing public schools. This year some form of taxpayer-financed system for awarding publicly funded “opportunity scholarships” is almost certain to pass the Tennessee Legislature. The big question is how big the program will be. Rep. Dunn tells TNReport here that he would rather start off with a tightly controlled system like that being proposed by the Haslam administration rather than one that’s more ambitious and wider reaching, as some GOP lawmakers favor.